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v3.19.3

Income Taxes (Details) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 26, 2019 | Sep. 27, 2018 | Sep. 26, 2019 | Sep. 27, 2018
Income Taxes |  |  |  |
Effective Income Tax Rate | 25.30% | 13.90% | 23.40% | 21.50%

X
- Definition The effective income tax rate of the company during the period. + References No definition available. + Details
Name: | mcs_EffectiveIncomeTaxRate
Namespace Prefix: | mcs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration